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Basic knowledge about the motor(9)

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Basic knowledge about the motor(9)
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Basic knowledge about the motor


30. The rotor of the synchronous motor has two types: hidden pole and salient pole.


31. The equivalent phase number of the squirrel cage rotor equals the number of slots, and the equivalent number of turns per phase is 1/2.


32. Three-phase symmetrical AC winding, symmetrical three-phase AC, whose fundamental wave magnetomotive force is a circular

rotating magnetomotive force, whose direction of rotation is from the axis of the leading phase winding to the axis of the lag phase and then to the next axis of a lagging phase.


33. The three-phase winding of the three-phase transformer has two connection methods: star and triangle; the magnetic circuit has two structures, a group and a heart.

 

 

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Pub Time : 2019-04-29 16:39:50 >> News list
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